Car-truck.



m. 826,872. PATENTED JULY 24,1906.

S. OTIS. SAR TRUCK.

APPLICATION FILED FEE-13,1905.

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' SPENCER one, or onroAco, ILLINOIS. i

-QAR-TRUQK Specification of Letters Batent.

Yatented July 24, 1906.

To all whom it may concern/.- 4

Be it'known that I, SPENCER OTIS, a citizen of the United States,residing in Chicago,

' in the county of Cook and State of Illinois,

A further object is to provide a car-truck having a frame and bolstermechanism comprising means for equalizing the weight of the load.-

A further object is to provide a car-truck having three pairs of Wheels,with frame and bolster mechanism mounted upon such wheels and adapted topermit the independent vertical movement of each pair of wheels toeqlualize the weight of the load upon such who s and to enable theentire truck-frame to be mounted inside the wheels.

A further object is to provide a car-truck mechanismcompris'ing threepairs of wheels, with bolster mechanism and s ring mechanism arrangedbetween the w -eels for sup porting the bolster mechanism, whereby theuse of an ordinary pedestal-frame having springs directly over theaxle-jonrnals may be dispensed with in a six-wheel truck.

Other and further objects of the invention will appear from anexamination of the drawings and the following descri tion and claims.

The invention consists in t e features, combinations, and details ofconstruction hereinafter described and claimed.

In the accompanying drawings, Figure l is a plan view of a car-truckconstructed in ac cordance with my improvements; Fig. 2, a

side elevation of the same; Fig. 3, a view in elevation taken on line 3of Fig. 1 looking 111 the direction of the arrow with one end portion ofthe track omitted to permit an enlarged ,view of the parts shown; Fig.4, a longitudinal sectional elevation taken on line 4 of Fig. 1 lookingin the direction of the arrow, showing the longitudinal bolster inlongitudinalsection and the transverse bolsters each in cross-section;Fig. 5, a transverse sectional elevation taken on line 5 of Fig. 1through the the pivoted forward and'rear arch-bars.

center of'one of the transverse bolstersyand Fig. 6, a sectional planview taken on hne 6 0i Fig. 3, showing the spring-seats in detail withthe springs-removed and a section of the bottom portion, of one of thetransverse bolsters.

In constructing a car-truck in accordance with my improvements I providethree pairs of wheels (1, having axles I), each provided with journalpor ions, preferably inside, of or between the whe ls. The truck-frameconsists of flexible side frames suitably connected. Each side framecomprises a pair'of upper arch-bars c and lower arch-bars d, pivotallyconnected to the central journal be); or

frame portion e at the longitudinal center of the truck-frame by meansof pivot-pins. f.

These central journal-boxes are free to rock upon their supporting-axleand form a piv oted link or articulate. connection between The oppositeends of each. pair of u per and lower arch-bars are secured to the outand rear journal-boxes and h, respectively, and held permanently in o bymeans of columnsi an headed bolts j, the lower ortion k of each of theend journal-boxes eing removably secured in position by means of suchcolumns and bolts, and such journal-boxes bein thus held in o erativeposition between the arch-bars. ach of the central journal-boxes is alsoprovided to the body portion of such journal-box by means of boltsm andnuts n, as shown in Fi 3, the main body portion of such jour-' naI-boxbeing provided at the front and rear sides thereof with perforated lugs:0 for receiving the pivot-pins f, already described, and admitting thepivoted upper and lower arch-bars therebetween. The pins f may besecured in place by means of cotters p or in any ordinary and well-knownmanner, and

erative position with a removable bottom portion Z, secured all of thejournal-boxes are of course pro. 4' vided with suitable bearings for theaxlejournals, which bearingsmay be of any desiredknown type, andtherefore need not be described in detail. By this arrangementit will beseen that each side frame consists of a pair of end portions pivotallyconnected to gether by means 0 a central oscillatin frame portion whichalso forms the centra journalbox, thus permitting the independent"vertical movement of each pair of wheels spring-seats t and between tbetween each pair of may be formed of an 'versely across the truck fromside frame to Each of the bolster extend diagonally across the underside'of the truck-frame and are each secured at their opposite ends tothe opposite side frames by means of bolts 1, which extend verticallythrough upright columns 8, such columns being arranged in op osite sidesof e upper and lower arch-bars of each of the pivoted end portions ofthe side frames.

' An upper spring-seat w is slidably mounted columns 8 and suported uponsuitable springs c, which are eld in operative position by means ofupwardly-projecting studs w on the lower spring seats and downwardlyprojecting studs 0; on the upper spring-seats. Transverse bolsters y,having a central web portion 2 and lower flan e portions 2, which -beam,extend transside frame, one forward and the other rearward of thecentral pair of wheels and central pivotal portions of the side frames.of these transverse bolsters is mounted between a set of columns s andrests upon the springs v, alread described. The upper sprin -seats w, aready described, are secure vto the transverse bolsters by means ofbolts 3- 'and may be said to form a part of such bolsters.

. Suitable lugs 4 upon the transverse bolsters slidably engage o positesides of the columns between whic such bolsters are mounted and ermitthe vertical movement between such columns, at the same time securingthe bolsters in position transversely of the truck.

Suitable side bearing portions 5 are provided upon the opposite ends ofeach of the transverse bolsters for preventing the undue tip ing of thecar-body, and the ends of centra bolster portions z form depending endportions which extend vertically between the olstersupporting s rings.

In order to norma 1 support the weight of the car and to equa ize ordistribute it as may be required, an equalizing longitudinal bolster 6,having a central bearing"? for supporting the wei ht of the car, isprovided. This longitudinfi bolster is mounted withits opposite endsresting upon the center of the forward and rear transverse bolsters,respectively, suitable center bearing-plates 8 being provided forsupporting the ends ofthe equalizing-bolster upon such transversebolsters. Each of these bearing-plates 8 has a central or annular recessin its upper surface, as shown in Fig. 4, for admittin dependinprojections 9 on the longitudinal olster, an

1n order to secure the longitudinal bolster and transverse bolsterstogethe so as to per mit the desired amount of play and at the same timehold them securely in operative position a headed bolt 10 is mounted n acentral perforation in each of the bearingplates 8, so as to extendupward beyond the upper face of such bearing-plate, forming a centralstud upon each transverse bolster. The opposite ends of the longitudinalbolster are each provided with perforations 11 for receiving suchupright bolts or pins, and a perforation 12 is also provided at each endof the longitudinal bolster directly over each perforation 11 forpermitting the insertion of p a cotter-pin 13 into the upper end of thebolt or stud 10. By this arrangement the bolt or stud is not re uired toextend above the upf the longitudinal bolster, and the separation of thearts when desirable is per surface 0 rendered feasible, an the parts areheld se curely in operative position, while at the same time permittingthe desired amount of plig therebetween.

y the above arrangement it will be readily seen that the weight of thecar restin upon the center of the lon itudinal or equa izing bolster istransferre to the front and rear transverse bolsters, which rest 11 onthe springs,' and that such weight is yie dindgly' or supported upon thesprings and equalize distributed u on all of the six wheels of thetruck. It W1 1 also be seen that the pivotal connection between theopposite end portions of each side frame an the central jour nal-boxpermits the desired independent vertical movement of eachair ofsupporting-wheels and thatby thus p acin the trans- I verse bolsters andthesprin mechanism for yieldingly sup orting them etween thesupporting-whee s a simple and efiicient cartruck is provided which;dispenses withthe necessity for mounting the springs directly over theaxles or axle-bearings, as m the case of the ordinary pedestalat rucka Iprefer tomount the side frames of the truck between thesupporting-wheels rather than upon the outside thereof.

The central and front and rear side frame portions are so flexiblyconnected by the means above described that each side frame issufficiently flexible both vertically and transversely to permit alimited transverse movement of the flexibly-connected portions and alsothe desired vertical movements thereof.

I claim 1. In a car-truck, the 'eombination'of a central journal-boxsection and end journalbox sections, an end journal-box section beingpivotally connected to each end of the central journal-box section.

2. In a car-truck, the combination of a central journal-box section andend journalriedby the sections for supporting the carbody.

3. The combination a cartr'uck' of a central journal-box section and endjournal box sections each having independent con-- nection with thecentral section, transverse bolsters mounted on each of the endsections, and a single longitudinal bolster connecting the transversebolsters and supported thereporting the car-body.

The combination in a cartruck of a central journal-box section and endjournalbox sections each having independent connection with the centralsection, transverse bolsters mounted on each of the end sections,asingle longitudinalbolsterconnecting the transverse bolsters and suported thereby, and means on the longitudinaFb olster for sup- 5. In acar-truck, the combination of side frames each having front and rearpivoted portions provided with bearings, a bolster mounted in the rearpivoted portions of such side frames, a bolster mounted in the forwardportions of the side frames bolster mechan lsm mounted upon such forwardand; rear bolsters for supporting the car-body, and.

means for connecting such side frames all ar-' ranged between thesupporting-wheels of a car. ,I

6. Ina car-truck, the combination of side frames each having front andrear pivoted portions provided with bearings, a-bolster mounted in therear portions of such side frames back of the pivotal points thereof, abolster mounted in thejforward portions of the side frames forward ofthe pivotal points. thereof, spring mechanism for yieldingly supportingsuch bolsters, and an equalizingbol ster extending longitudinally of the,truck and having its opposite end ortions mount' ed upon such front andrear olsters. 1

7. In a car-truck, the combination of s ide frames each having a centralmember 'provided-witha journal-box and havin front and rear side frameortions pivotal y connected to such centra member, bearings for all ofsuch front and rear pivoted portions, a transverse bolster mounted upon,the' rear pivoted ortions of such side frames, a trans verse bo stermounted in the forward pivoted portions ofthe side frames, and'a singlelongitudinal bolster mounted uponsuch forward and rear transversebolster 8. In a car-truck, the combination of side frames having frontand rear, pivotedpOrfront andrear portions, transverse bolster mechanismmounted upon the front and rea pivoted portions of the side frames, an

equalizing bolster mechanism mounted upon such transverse bolstermechanism and sup-- ported thereby.

9. In a car-truck, the combinationof side frames each having a centraljournal-box and front and rear sideframe portions pivotally connected tosuch journal-born? jour-r nal-boxes mounted in such front and rearpivoted portions of the side frames, transverse bolsters mounted in thefront and rear pivoted side frameportions respectively be-' tween thejournal-boxes and ivotal points thereof, and an equalizing' bostermounted upon the transverse bolsters.

10. In a car-truck, the combination of side frames each having a centraljournal-box and front and rear side frame portions pivotally connectedto such journal-box, journahboxes mounted in such front and rear pivotedverse b0 sters mounted respectively in the front and rear pivoted sideframe portions between the journal-boxes and pivotal points thereof,spring mechanism for yieldingly suporting such transverse bolsters,,and' a ongitudinally-extending equalizing-bolster mounted u on suchtransverse bolsters-and rovidedwith a central bearing for supportmg thecar-body. ll, Ina car-truck, the combination of intermediate front andrear su porting-wheels ortions ofv the side frames, trans-v arranged inpairs, an axle or each pair of. such wheels provided with journalsbetween frames forward ofthe pivotal points thereof,

and an equalizing-bolster mounted upon such transverse bolsters.

12. In a car-truck, the combination of side frames each having a centralframe portion provided with a journal-bezirin ,arch-bars pivotallysecured to such centra frame portion extending forward and rearwardtherefrom provided with journal-bearings and forming pivoted frameportions, columns mounted in the pivoted frame portions formed by sucharch-bars between the piv- .otal points thereof and thejournal-bearings, transverse bolsters extending-between such columns andprovided with means for slidably engaging the columns, s ring mechanismfor supporting such bo sters, and an e ualizingbolster extendinglongitudinall o the truck and having its 0 posite end mounted upon suchtransverse olsters.

13. In a car-truck, the combination of side I 5 of such springs in eachside frame.

frames, vertical compressible springs ar-" Witnes ses frames,vertically-compressible springs .on the spring, and 9. depending web onth 'mounted in the side frames and a transverse bolster extending acrossthe truck bet'wee' bolster resting on and having a central dethe springsof each air. A l

pending web extending between a plurality Olncago, Illinois, ebruarg 4,1905.

- SPENCER,

14. In a car-truck, the oombinationoof side ranged in pairs mounted onthe side frames, I1 HARRY I.- CRO rl 1n, transverse bolstershaving theirends resting Annm QQQUBTENAYIY. 4

